Chemistry: physical processes – Physical processes – Crystallization
Patent
1977-07-07
1978-04-11
Tayman, Jr., James H.
Chemistry: physical processes
Physical processes
Crystallization
23277R, 193 32, 202116, 202128, 423154, 423535, 423541R, F27B 914, B01J 600
Patent
active
040836932
ABSTRACT:
A system for regenerating waste acid, comprises (1) a concentrator for concentrating the waste liquor, (2) a reactor for reacting the concentrated liquor at a temperature below 1000.degree. F. in the presence of oxygen and hydrocarbon combustion gases and on a recycled moving bed of particles without vibration of the reactor bottom, (3) a separator for separating the iron oxide dust from the other gases from the reactor, (4) the same concentrator cools these gases, (5) an absorber for absorbing the hydrogen chloride cooled gas in an aqueous solution from the following scrubber, (6) a scrubber for scrubbing the unabsorbed gases in water to absorb the hydrogen chloride gas remaining in the gases from the absorber, and (7) a condenser for condensing any liquids and any residual HCl remaining in the exhaust gases before exhausting them as non-polluting gases into the atmosphere and passing the condensate back into the waste acid concentrator.
REFERENCES:
patent: 1882864 (1932-10-01), Nickerson
patent: 1918398 (1933-07-01), Johnson
patent: 1955038 (1934-04-01), Walker et al.
patent: 3745207 (1973-07-01), Hansen
Gerber Eliot S.
Tayman, Jr. James H.
Toledo Pickling & Steel Service, Inc.
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